Nucleus

diff --git a/include/nucleus/panic.h b/include/nucleus/panic.h
index 63034cf..27eea94 100644
--- a/include/nucleus/panic.h
+++ b/include/nucleus/panic.h
@@ -1,6 +1,7 @@
 #ifndef _NUCLEUS_PANIC_H
 #define _NUCLEUS_PANIC_H
 
+int sprintf(char *buf, char *fmt, ...);
 void kprintf(char *fmt, ...);
 _Noreturn void panic(char *fmt, ...);
 
diff --git a/kernel/panic.c b/lib/printf.c
similarity index 91%
rename from kernel/panic.c
rename to lib/printf.c
index 5d1a847..de1a729 100644
--- a/kernel/panic.c
+++ b/lib/printf.c
@@ -1,8 +1,8 @@
 /*
- * This file implements the full kernel panic routine.  This routine does not
- * return, and is essentially a shutdown routine.  It will print a message to
- * the debug port and halt the processor.  In an ideal build, this function
- * won't need to be linked in.
+ * This file implements the *printf routines, as well as the full kernel panic
+ * routine.  The kernel panic routine does not return, and halts the processor
+ * after running, the other *printf routines work as they normally would.
+ * kprintf() outputs to the debug port rather than to the screen.
  */
 
 #include <stdint.h>
@@ -246,6 +246,18 @@ repeat:
 	return str-buf;
 }
 
+/* Format a string into a buffer */
+int
+sprintf(char *buf, char *fmt, ...)
+{
+	int ret;
+	va_list args;
+	va_start(args, fmt);
+	ret = vsprintf(buf, fmt, args);
+	va_end(args);
+	return ret;
+}
+
 /* Print formatted text to debug port */
 void
 kprintf(char *fmt, ...)